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Piel y pelo

Demodicosis (demodectic mange)

A skin disease caused by the Demodex mite, which normally lives in the hair follicles but proliferates when the immune system fails. It is NOT contagious.

Moderate🐕 Dogs

Symptoms to watch for

  • Hairless patches, often around the eyes and muzzle
  • Reddened, scaly skin
  • In the generalised form: extensive lesions, crusting, secondary infection
  • Variable itching (worse if there is infection)

Causes

Proliferation of the Demodex mite due to an immature immune system (puppies) or immunosuppression (illness, medication, stress). The localised juvenile form usually resolves on its own.

Diagnosis

Deep skin scraping examined under the microscope to see the mites.

Treatment

Mild localised form: often resolves on its own. Generalised form: specific antiparasitic drugs (isoxazolines) as prescribed by the vet, treat the secondary infection and the underlying cause.

Prevention

Do not breed from affected animals (there is a hereditary component in the generalised form), and maintain good immune and nutritional status.

When should you see the vet?

See your vet if you notice hairless patches, especially if they are spreading. The generalised form requires treatment and ruling out an underlying immune cause.

WetAi guides you and takes you to the vet; it does not diagnose.

Notice: this information is for general guidance and educational purposes only. It does NOT replace diagnosis or treatment by a registered veterinary surgeon. If you notice any symptoms, always consult a professional. Wallapets accepts no responsibility for the use of this information without veterinary supervision.